MITSUBISHI ELECTRIC P-Series Ceiling Suspended Air Conditioning System User Guide

: June 8, 2024
: Mitsubishi Electric

Table of Contents

MITSUBISHI ELECTRIC P-Series Ceiling Suspended Air Conditioning System
INDOOR UNIT FEATURES
OUTDOOR UNIT FEATURES
SPECIFICATIONS
ACCESSORIES
DIMENSIONS
Piping Knockout Hole Details
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MITSUBISHI ELECTRIC P-Series Ceiling Suspended Air Conditioning System

Job Name:
System Reference

Date:

Indoor Unit …… PCA-A24KA8
Outdoor Unit …….PUY-A24NHA7

INDOOR UNIT FEATURES

Airflow settings for high and low-ceiling applications
Knock-out for outside-air intake
Optional i-see SensorTM for air distribution and energy saving
Auto fan speed mode
Filter status indicator
Easy-to-clean, washable filter
Suspends from the ceiling for quick and easy installation
Ideal for larger retail stores, classrooms, and restaurants
Multiple control options available:
- kumo cloud® smart device app for remote access
- Third-party interface options
- Wired or wireless controllers

OUTDOOR UNIT FEATURES

Variable speed INVERTER-driven compressor
Pre-charged with refrigerant volume for piping length up to 70 ft
Low ambient cooling down to -40°F providing 100% capacity (with wind baffles)
24-hour continuous operation (cooling mode)
High-pressure protection
Fast restart
Superior energy and operational efficiency
Seacoast protection
- External Outer Panel : Phosphate coating + Acrylic-Enamel coating
- Fan Motor Support: Epoxy resin coating (at edge face)
- Separator Assembly Valve Bed : Epoxy resin coating (at edge face)
- Blue Fin treatment is an anti-corrosion treatment that is applied to the Heat exchanger coil to protect it against airborne contaminants.
- Heat exchanger coil and base panel rated for 2,000 hours in accordance with ASTM B117 testing
Seacoast protection standard from 2022 production

Specifications are subject to change without notice

SPECIFICATIONS

SPECIFICATIONS: PCA-A24KA8 & PUY-A24NHA7

Cooling at 95°F1	Maximum Capacity	BTU/H	24,000
Rated Capacity	BTU/H	24,000
Minimum Capacity	BTU/H	10,000
Maximum Power Input	W	1,960
Rated Power Input	W	1,960
Moisture Removal	Pints/h	5.8
Sensible Heat Factor	0.73
Power Factor [208V / 230V]	%	94.7 / 94.7
Efficiency	SEER2	21.0
EER21	12.2
HSPF2 [IV]	—
ENERGY STAR® Certified	No
Electrical	Voltage, Phase, Frequency	208/230, 1, 60
Guaranteed Voltage Range	V AC	198 – 253
Voltage: Indoor – Outdoor, S1-S2	V AC	208/230
Voltage: Indoor – Outdoor, S2-S3	V DC	24
Short-circuit Current Rating [SCCR]	kA	5
Recommended Fuse/Breaker Size (Outdoor)	A	25
Recommended Wire Size [Indoor – Outdoor]	AWG	14
Power Supply	Indoor unit is powered by the outdoor unit
Indoor Unit	MCA	A	1.0
Fan Motor Full Load Amperage	A	0.54
Fan Motor Output	W	95
Fan Motor Type	DC Motor
Airflow Rate at Cooling, Dry	CFM	530–565–600–670
Airflow Rate at Cooling, Wet	CFM	495–530–565–635
Airflow Rate at Heating, Dry	CFM	530–565–600–670
Sound Pressure Level [Cooling]	dB[A]	33–35–37–40
Sound Pressure Level [Heating]	dB[A]	33–35–37–40
Drain Pipe Size	In. [mm]	1-1/32 [26]
Coating on Heat Exchanger	—
External Finish Color	White Munsell 6.4Y 8.9/0.4
Unit Dimensions	W x D x H: In. [mm]	50-3/8 x 26-3/4 x 9-1/16 [1,280 x 680 x

NOTES:

AHRI Rated Conditions
(Rated data is determined at a fixed compressor speed) 1
Cooling (Indoor // Outdoor)

°F 80 DB, 67 WB // 95 DB, 75 WB

Indoor/Outdoor Unit Operating Temperature Range (Cooling Air Temp [Maximum / Minimum]):
Wind baffles are required to operate below 23°F DB in cooling mode.
The cooling-only system with advanced wind baffle: -40°F – 115°F.
Refer to wind baffle documentation for further information.
Outdoor Unit Operating Temperature Range (Cooling Thermal Lock-out / Re-start Temperatures; Heating Thermal Lock-out / Re-start Temperatures):
System cuts out in heating mode to avoid thermistor error and automatically restarts at these temperatures.
Blue Fin Coating Standard from 2022 production:
PU(Y/Z)-A(12/18)NKA7 – Beginning with serial number 12U*****
PU(Y/Z)-A(24/30/36/42)NKA7 – Beginning with serial number 1ZU*****

SPECIFICATIONS: PCA-A24KA8 & PUY-A24NHA7

Piping	Gas Pipe Size O.D. [Flared]	In.[mm]
Liquid Pipe Size O.D. [Flared]	In.[mm]	3/8 [9.52]
Maximum Piping Length	Ft. [m]	225 [68]
Maximum Height Difference	Ft. [m]	100 [30]
Maximum Number of Bends	15

AHRI Rated Conditions
(Rated data is determined at a fixed compressor speed) 1
Cooling (Indoor // Outdoor)

°F 80 DB, 67 WB // 95 DB, 75 WB

Indoor/Outdoor Unit Operating Temperature Range (Cooling Air Temp [Maximum / Minimum]):
Wind baffles are required to operate below 23°F DB in cooling mode.
The cooling-only system with advanced wind baffle: -40°F – 115°F.
Refer to wind baffle documentation for further information.
Outdoor Unit Operating Temperature Range (Cooling Thermal Lock-out / Re-start Temperatures; Heating Thermal Lock-out / Re-start Temperatures):
System cuts out in heating mode to avoid thermistor error and automatically restarts at these temperatures.
Blue Fin Coating Standard from 2022 production:
PU(Y/Z)-A(12/18)NKA7 – Beginning with serial number 12U*****
PU(Y/Z)-A(24/30/36/42)NKA7 – Beginning with serial number 1ZU*****

ACCESSORIES

INDOOR UNIT ACCESSORIES: PCA-A24KA8

Control Interface

| CN24 Relay Kit| □ CN24RELAY-KIT-CM3
---|---|---
IT Extender| □ PAC-WHS01IE-E
kumo station® for kumo cloud®| □ PAC-WHS01HC-E
Procon BACnet® and Modbus® Interface| □ PAC-UKPRC001-CN-1
Remote Operation Adapter‡| □ PAC-SF40RM-E
Thermostat Interface| □ PAC-US445CN-1
USNAP Adapter| □ PAC-WHS01UP-E
Remote Sensor| Flush Mount Remote Temperature Sensor| □ PAC-USSEN002-FM-1
Remote Temperature Sensor| □ PAC-SE41TS-E
Wireless temperature and humidity sensor for kumo cloud®| □ PAC-USWHS003-TH-1
Wired Remote Controller| Deluxe Wired MA Remote Controller†| □ PAR-40MAAU
Simple Ductless Wired Remote Controller| □ PAC-SDW01RC-1
Simple MA Remote Controller†| □ PAC-YT53CRAU-J
Touch MA Controller†| □ PAR-CT01MAU-SB
Wireless Remote Controller| kumo touch™ RedLINK™ Wireless Controller| □ MHK2
Lockdown bracket for remote controller| □ RCMKP1CB
Wireless MA Receiver| □ PAR-FA32MA-W
Wireless MA Remote Controller| □ PAR-FL32MA-E
Wireless Receiver Kit| □ PAR-SL93B-E
Wireless Receiver Kit with i-See sensor™| □ PAR-SA92MW-E
Condensate| Blue Diamond (Advanced) Mini Condensate Pump w/ Reservoir & Sensor (208/230V) [recommended]| □ X87-721
Blue Diamond (MegaBlue Advanced) Condensate Pump w/ Reservoir & Sensor| □ X87-835
Refco Condensate Pump (100-240 VAC) up to 120,000 BTU/H| □ COMBI
Disconnect Switch| (30A/600V/UL) [fits 2” X 4” utility box] – Black| □ TAZ- MS303
Filter| 65% Medium Efficiency Filter (MERV 8)| □ PAC-SH89KF-E
Lineset| 10’ x 3/8” x 10’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-10
100’ x 3/8” x 100’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-100
15’ x 3/8” x 15’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-15
30’ x 3/8” x 30’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-30
50’ x 3/8” x 50’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-50
65’ x 3/8” x 65’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-65

NOTES:
PAC-SF40RM-E (Unable to use with wireless remote controller)

OUTDOOR UNIT ACCESSORIES: PUY-A24NHA7

Air Outlet Guide	Air Outlet Guide (1 Piece)	□ PAC-SG59SG-E
Centralized Drain Pan	Centralized Drain Pan	□ PAC-SG63DP-E
Drain Pan	□ PAC-SG64DP-E
Control/Service Tool	Control/Service Tool	□ PAC-SK52ST
M- & P-Series Maintenance Tool Cable Set	□ M21EC0397
Maintenance Tool Interface	□ PAC-USCMS-MN-1
USB/UART Conversion Cable (Required for all laptop connections)	□ M21EC1397
Hail Guards	Hail Guard	□ HG-A6

M-NET Converter

DIMENSIONS

INDOOR UNIT DIMENSIONS: PCA-A24KA8

$MITSUBISHI-ELECTRIC-P-Series-Ceiling-Suspended-Air-Conditioning-System-FIG $6$$

In case of the rear pipe arrangement, make sure to .) remove the shaded portions from the independent piece.

Then put the independent piece back in initial position. (The heat exchanger might be dogged because of dust) $MITSUBISHI-ELECTRIC-P-Series-Ceiling- Suspended-Air-Conditioning-System-FIG $7$$

Drainage pipe connection(1(26mm)I.D.)
Drainage pipe connection(for the left arrangement)
Knockout hole for left drain-piping arrangement Refrigerant-pipe connection(gas pipe side/flared connection)
Refrigerant-pipe connection (liquid pipe side/flared connection)
Knockout hole for upper drain pipe arrangement Knockout hole for fresh air intake 3-15/16(@100) ® Knockout hole for wiring arrangement Ф7/8(Ф22)

Accessory…Drain socket (1(26mm) I.D.)

OUTDOOR UNIT DIMENSIONS: PUY-A24NHA7

FREE SPACE (Around the unit)

The diagram below shows a basic example.

Explanations of particular details are given in the installation manuals etc.

$MITSUBISHI-ELECTRIC-P-Series-Ceiling-Suspended-Air-Conditioning-System-FIG $8$$

SERVICE SPACE

Dimensions of space needed for service access are shown in the below diagram.

FOUNDATION BOLTS

Please secure the unit firmly with 4 foundation (M10<W3/8>) bolts. (Bolts and washers mu

PIPING-WIRING DIRECTIONS

Piping and wiring connections can be made from 4 directions: FRONT, Right,Rear and Below.

$MITSUBISHI-ELECTRIC-P-Series-Ceiling-Suspended-Air-Conditioning-System-FIG $11$$

Example of Notes

Refrigerant GAS pipe connection (FLARE) ø15.88(5/8F)
Refrigerant LIQUID pipe connection (FLARE) ø 9.52(3/8F)
Indication of STOP VALVE connection location

$MITSUBISHI-ELECTRIC-P-Series-Ceiling-Suspended-Air-Conditioning-System-FIG $12$$